Boris , look at this sentence . " Healthy eating is not about strict nutrition philosophies , staying unrealistically thin , or depriving yourself of foods you love . " It's interesting , isn't it ?   I'd rather say it's confusing . what are those " strict nutrition philosophies " about ?   I believe they are careful calculations on proteins , vitamins and calories .   Probably , Iris . That must be the job of nutritionists .   Healthy eating is not about depriving oneself of the foods one loves . So we are free to have whatever foods we love . It is unbelievable .   Oh , believe it or not , I came across an article the other day , saying that pizza is a healthy food .   Seriously ?   Yes , I felt exactly the same way as you did just now . Scientists must be crazy in saying so .   Maybe nowadays people hold different opinions on healthy diet .   Absolutely . I myself sometimes believe that healthy eating is just about feeling great . As long as I have enough energy , it's fine .   But one must have some basic ideas about nutrition and find the best way for it to work out for the body . 